
    <nz-spin [nzSpinning]="isSpinning" [nzDelay]="500">
      <nz-alert [nzType]="'info'" [nzMessage]="'Alert message title'" [nzDescription]="'Further details about the context of this alert.'">
      </nz-alert>
    </nz-spin>
    <div style="margin-top:8px;">
      Loading state：
      <nz-switch [(ngModel)]="isSpinning"></nz-switch>
    </div>
  